ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

Kinetic Study of Action of Additives in Poly(Vinyl Chloride) Stabilizer Systems. 1. Sterically Hindered Phenolic Antioxidants

P. Kovařík, E. Klein, and L. Valko

Department of Physical Chemistry, Faculty of Chemical Technology, Slovak University of Technology, SK-812 37 Bratislava

 

Abstract: The action of two antioxidants from the sterically hindered phenol group - Irganox 1010 and Topanol CA - has been studied. Twenty-five film samples, which consisted of poly(vinyl chloride), antioxidant, and heat stabilizer systems, have been prepared. The additives used were nontoxic and without ecological hazards. Degradation in real atmosphere was followed potentiometrically. The time of thermal stability tau and the gradient of degradation degree dx/dt were evaluated from the measured kinetic curves. Kinetic models were proposed for the antioxidant as sole additive and for the antioxidant-CaO system to calculate the corresponding rate constants, which allow to compare the effectiveness of the antioxidant and to prove the synergism between CaO and Irganox 1010. Two composite stabilizer systems for long-time stabilization have been found.

Full paper in Portable Document Format: 515a245.pdf

 

Chemical Papers 51 (5) 245–251 (1997)

Thursday, March 28, 2024

IMPACT FACTOR 2021
2.146
SCImago Journal Rank 2021
0.365
SEARCH
Advanced
VOLUMES
European Symposium on Analytical Spectrometry ESAS 2022
© 2024 Chemical Papers